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Diffstat (limited to 'drivers/i2c/chips/lm90.c')
-rw-r--r--drivers/i2c/chips/lm90.c273
1 files changed, 151 insertions, 122 deletions
diff --git a/drivers/i2c/chips/lm90.c b/drivers/i2c/chips/lm90.c
index 9b127a07f56b..a67dcadf7cb0 100644
--- a/drivers/i2c/chips/lm90.c
+++ b/drivers/i2c/chips/lm90.c
@@ -1,7 +1,7 @@
/*
* lm90.c - Part of lm_sensors, Linux kernel modules for hardware
* monitoring
- * Copyright (C) 2003-2004 Jean Delvare <khali@linux-fr.org>
+ * Copyright (C) 2003-2005 Jean Delvare <khali@linux-fr.org>
*
* Based on the lm83 driver. The LM90 is a sensor chip made by National
* Semiconductor. It reports up to two temperatures (its own plus up to
@@ -19,7 +19,7 @@
* Complete datasheets can be obtained from National's website at:
* http://www.national.com/pf/LM/LM89.html
* http://www.national.com/pf/LM/LM99.html
- * Note that there is no way to differenciate between both chips.
+ * Note that there is no way to differentiate between both chips.
*
* This driver also supports the LM86, another sensor chip made by
* National Semiconductor. It is exactly similar to the LM90 except it
@@ -39,7 +39,7 @@
* chips made by Maxim. These chips are similar to the LM86. Complete
* datasheet can be obtained at Maxim's website at:
* http://www.maxim-ic.com/quick_view2.cfm/qv_pk/2578
- * Note that there is no easy way to differenciate between the three
+ * Note that there is no easy way to differentiate between the three
* variants. The extra address and features of the MAX6659 are not
* supported by this driver.
*
@@ -70,13 +70,13 @@
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/jiffies.h>
#include <linux/i2c.h>
#include <linux/i2c-sensor.h>
+#include <linux/hwmon-sysfs.h>
/*
* Addresses to scan
@@ -139,9 +139,9 @@ SENSORS_INSMOD_6(lm90, adm1032, lm99, lm86, max6657, adt7461);
/*
* Conversions and various macros
* For local temperatures and limits, critical limits and the hysteresis
- * value, the LM90 uses signed 8-bit values with LSB = 1 degree Celcius.
+ * value, the LM90 uses signed 8-bit values with LSB = 1 degree Celsius.
* For remote temperatures and limits, it uses signed 11-bit values with
- * LSB = 0.125 degree Celcius, left-justified in 16-bit registers.
+ * LSB = 0.125 degree Celsius, left-justified in 16-bit registers.
*/
#define TEMP1_FROM_REG(val) ((val) * 1000)
@@ -206,9 +206,14 @@ struct lm90_data {
int kind;
/* registers values */
- s8 temp_input1, temp_low1, temp_high1; /* local */
- s16 temp_input2, temp_low2, temp_high2; /* remote, combined */
- s8 temp_crit1, temp_crit2;
+ s8 temp8[5]; /* 0: local input
+ 1: local low limit
+ 2: local high limit
+ 3: local critical limit
+ 4: remote critical limit */
+ s16 temp11[3]; /* 0: remote input
+ 1: remote low limit
+ 2: remote high limit */
u8 temp_hyst;
u8 alarms; /* bitvector */
};
@@ -217,75 +222,88 @@ struct lm90_data {
* Sysfs stuff
*/
-#define show_temp(value, converter) \
-static ssize_t show_##value(struct device *dev, struct device_attribute *attr, char *buf) \
-{ \
- struct lm90_data *data = lm90_update_device(dev); \
- return sprintf(buf, "%d\n", converter(data->value)); \
+static ssize_t show_temp8(struct device *dev, struct device_attribute *devattr,
+ char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct lm90_data *data = lm90_update_device(dev);
+ return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp8[attr->index]));
+}
+
+static ssize_t set_temp8(struct device *dev, struct device_attribute *devattr,
+ const char *buf, size_t count)
+{
+ static const u8 reg[4] = {
+ LM90_REG_W_LOCAL_LOW,
+ LM90_REG_W_LOCAL_HIGH,
+ LM90_REG_W_LOCAL_CRIT,
+ LM90_REG_W_REMOTE_CRIT,
+ };
+
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct i2c_client *client = to_i2c_client(dev);
+ struct lm90_data *data = i2c_get_clientdata(client);
+ long val = simple_strtol(buf, NULL, 10);
+ int nr = attr->index;
+
+ down(&data->update_lock);
+ if (data->kind == adt7461)
+ data->temp8[nr] = TEMP1_TO_REG_ADT7461(val);
+ else
+ data->temp8[nr] = TEMP1_TO_REG(val);
+ i2c_smbus_write_byte_data(client, reg[nr - 1], data->temp8[nr]);
+ up(&data->update_lock);
+ return count;
}
-show_temp(temp_input1, TEMP1_FROM_REG);
-show_temp(temp_input2, TEMP2_FROM_REG);
-show_temp(temp_low1, TEMP1_FROM_REG);
-show_temp(temp_low2, TEMP2_FROM_REG);
-show_temp(temp_high1, TEMP1_FROM_REG);
-show_temp(temp_high2, TEMP2_FROM_REG);
-show_temp(temp_crit1, TEMP1_FROM_REG);
-show_temp(temp_crit2, TEMP1_FROM_REG);
-
-#define set_temp1(value, reg) \
-static ssize_t set_##value(struct device *dev, struct device_attribute *attr, const char *buf, \
- size_t count) \
-{ \
- struct i2c_client *client = to_i2c_client(dev); \
- struct lm90_data *data = i2c_get_clientdata(client); \
- long val = simple_strtol(buf, NULL, 10); \
- \
- down(&data->update_lock); \
- if (data->kind == adt7461) \
- data->value = TEMP1_TO_REG_ADT7461(val); \
- else \
- data->value = TEMP1_TO_REG(val); \
- i2c_smbus_write_byte_data(client, reg, data->value); \
- up(&data->update_lock); \
- return count; \
+
+static ssize_t show_temp11(struct device *dev, struct device_attribute *devattr,
+ char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct lm90_data *data = lm90_update_device(dev);
+ return sprintf(buf, "%d\n", TEMP2_FROM_REG(data->temp11[attr->index]));
}
-#define set_temp2(value, regh, regl) \
-static ssize_t set_##value(struct device *dev, struct device_attribute *attr, const char *buf, \
- size_t count) \
-{ \
- struct i2c_client *client = to_i2c_client(dev); \
- struct lm90_data *data = i2c_get_clientdata(client); \
- long val = simple_strtol(buf, NULL, 10); \
- \
- down(&data->update_lock); \
- if (data->kind == adt7461) \
- data->value = TEMP2_TO_REG_ADT7461(val); \
- else \
- data->value = TEMP2_TO_REG(val); \
- i2c_smbus_write_byte_data(client, regh, data->value >> 8); \
- i2c_smbus_write_byte_data(client, regl, data->value & 0xff); \
- up(&data->update_lock); \
- return count; \
+
+static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr,
+ const char *buf, size_t count)
+{
+ static const u8 reg[4] = {
+ LM90_REG_W_REMOTE_LOWH,
+ LM90_REG_W_REMOTE_LOWL,
+ LM90_REG_W_REMOTE_HIGHH,
+ LM90_REG_W_REMOTE_HIGHL,
+ };
+
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct i2c_client *client = to_i2c_client(dev);
+ struct lm90_data *data = i2c_get_clientdata(client);
+ long val = simple_strtol(buf, NULL, 10);
+ int nr = attr->index;
+
+ down(&data->update_lock);
+ if (data->kind == adt7461)
+ data->temp11[nr] = TEMP2_TO_REG_ADT7461(val);
+ else
+ data->temp11[nr] = TEMP2_TO_REG(val);
+ i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2],
+ data->temp11[nr] >> 8);
+ i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2 + 1],
+ data->temp11[nr] & 0xff);
+ up(&data->update_lock);
+ return count;
}
-set_temp1(temp_low1, LM90_REG_W_LOCAL_LOW);
-set_temp2(temp_low2, LM90_REG_W_REMOTE_LOWH, LM90_REG_W_REMOTE_LOWL);
-set_temp1(temp_high1, LM90_REG_W_LOCAL_HIGH);
-set_temp2(temp_high2, LM90_REG_W_REMOTE_HIGHH, LM90_REG_W_REMOTE_HIGHL);
-set_temp1(temp_crit1, LM90_REG_W_LOCAL_CRIT);
-set_temp1(temp_crit2, LM90_REG_W_REMOTE_CRIT);
-
-#define show_temp_hyst(value, basereg) \
-static ssize_t show_##value(struct device *dev, struct device_attribute *attr, char *buf) \
-{ \
- struct lm90_data *data = lm90_update_device(dev); \
- return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->basereg) \
- - TEMP1_FROM_REG(data->temp_hyst)); \
+
+static ssize_t show_temphyst(struct device *dev, struct device_attribute *devattr,
+ char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct lm90_data *data = lm90_update_device(dev);
+ return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp8[attr->index])
+ - TEMP1_FROM_REG(data->temp_hyst));
}
-show_temp_hyst(temp_hyst1, temp_crit1);
-show_temp_hyst(temp_hyst2, temp_crit2);
-static ssize_t set_temp_hyst1(struct device *dev, struct device_attribute *attr, const char *buf,
- size_t count)
+static ssize_t set_temphyst(struct device *dev, struct device_attribute *dummy,
+ const char *buf, size_t count)
{
struct i2c_client *client = to_i2c_client(dev);
struct lm90_data *data = i2c_get_clientdata(client);
@@ -293,36 +311,37 @@ static ssize_t set_temp_hyst1(struct device *dev, struct device_attribute *attr,
long hyst;
down(&data->update_lock);
- hyst = TEMP1_FROM_REG(data->temp_crit1) - val;
+ hyst = TEMP1_FROM_REG(data->temp8[3]) - val;
i2c_smbus_write_byte_data(client, LM90_REG_W_TCRIT_HYST,
HYST_TO_REG(hyst));
up(&data->update_lock);
return count;
}
-static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf)
+static ssize_t show_alarms(struct device *dev, struct device_attribute *dummy,
+ char *buf)
{
struct lm90_data *data = lm90_update_device(dev);
return sprintf(buf, "%d\n", data->alarms);
}
-static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp_input1, NULL);
-static DEVICE_ATTR(temp2_input, S_IRUGO, show_temp_input2, NULL);
-static DEVICE_ATTR(temp1_min, S_IWUSR | S_IRUGO, show_temp_low1,
- set_temp_low1);
-static DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp_low2,
- set_temp_low2);
-static DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp_high1,
- set_temp_high1);
-static DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp_high2,
- set_temp_high2);
-static DEVICE_ATTR(temp1_crit, S_IWUSR | S_IRUGO, show_temp_crit1,
- set_temp_crit1);
-static DEVICE_ATTR(temp2_crit, S_IWUSR | S_IRUGO, show_temp_crit2,
- set_temp_crit2);
-static DEVICE_ATTR(temp1_crit_hyst, S_IWUSR | S_IRUGO, show_temp_hyst1,
- set_temp_hyst1);
-static DEVICE_ATTR(temp2_crit_hyst, S_IRUGO, show_temp_hyst2, NULL);
+static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp8, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp11, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp1_min, S_IWUSR | S_IRUGO, show_temp8,
+ set_temp8, 1);
+static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp11,
+ set_temp11, 1);
+static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp8,
+ set_temp8, 2);
+static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp11,
+ set_temp11, 2);
+static SENSOR_DEVICE_ATTR(temp1_crit, S_IWUSR | S_IRUGO, show_temp8,
+ set_temp8, 3);
+static SENSOR_DEVICE_ATTR(temp2_crit, S_IWUSR | S_IRUGO, show_temp8,
+ set_temp8, 4);
+static SENSOR_DEVICE_ATTR(temp1_crit_hyst, S_IWUSR | S_IRUGO, show_temphyst,
+ set_temphyst, 3);
+static SENSOR_DEVICE_ATTR(temp2_crit_hyst, S_IRUGO, show_temphyst, NULL, 4);
static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
/*
@@ -481,16 +500,26 @@ static int lm90_detect(struct i2c_adapter *adapter, int address, int kind)
lm90_init_client(new_client);
/* Register sysfs hooks */
- device_create_file(&new_client->dev, &dev_attr_temp1_input);
- device_create_file(&new_client->dev, &dev_attr_temp2_input);
- device_create_file(&new_client->dev, &dev_attr_temp1_min);
- device_create_file(&new_client->dev, &dev_attr_temp2_min);
- device_create_file(&new_client->dev, &dev_attr_temp1_max);
- device_create_file(&new_client->dev, &dev_attr_temp2_max);
- device_create_file(&new_client->dev, &dev_attr_temp1_crit);
- device_create_file(&new_client->dev, &dev_attr_temp2_crit);
- device_create_file(&new_client->dev, &dev_attr_temp1_crit_hyst);
- device_create_file(&new_client->dev, &dev_attr_temp2_crit_hyst);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_temp1_input.dev_attr);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_temp2_input.dev_attr);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_temp1_min.dev_attr);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_temp2_min.dev_attr);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_temp1_max.dev_attr);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_temp2_max.dev_attr);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_temp1_crit.dev_attr);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_temp2_crit.dev_attr);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_temp1_crit_hyst.dev_attr);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_temp2_crit_hyst.dev_attr);
device_create_file(&new_client->dev, &dev_attr_alarms);
return 0;
@@ -541,16 +570,16 @@ static struct lm90_data *lm90_update_device(struct device *dev)
u8 oldh, newh;
dev_dbg(&client->dev, "Updating lm90 data.\n");
- data->temp_input1 = i2c_smbus_read_byte_data(client,
- LM90_REG_R_LOCAL_TEMP);
- data->temp_high1 = i2c_smbus_read_byte_data(client,
- LM90_REG_R_LOCAL_HIGH);
- data->temp_low1 = i2c_smbus_read_byte_data(client,
- LM90_REG_R_LOCAL_LOW);
- data->temp_crit1 = i2c_smbus_read_byte_data(client,
- LM90_REG_R_LOCAL_CRIT);
- data->temp_crit2 = i2c_smbus_read_byte_data(client,
- LM90_REG_R_REMOTE_CRIT);
+ data->temp8[0] = i2c_smbus_read_byte_data(client,
+ LM90_REG_R_LOCAL_TEMP);
+ data->temp8[1] = i2c_smbus_read_byte_data(client,
+ LM90_REG_R_LOCAL_LOW);
+ data->temp8[2] = i2c_smbus_read_byte_data(client,
+ LM90_REG_R_LOCAL_HIGH);
+ data->temp8[3] = i2c_smbus_read_byte_data(client,
+ LM90_REG_R_LOCAL_CRIT);
+ data->temp8[4] = i2c_smbus_read_byte_data(client,
+ LM90_REG_R_REMOTE_CRIT);
data->temp_hyst = i2c_smbus_read_byte_data(client,
LM90_REG_R_TCRIT_HYST);
@@ -570,13 +599,13 @@ static struct lm90_data *lm90_update_device(struct device *dev)
*/
oldh = i2c_smbus_read_byte_data(client,
LM90_REG_R_REMOTE_TEMPH);
- data->temp_input2 = i2c_smbus_read_byte_data(client,
- LM90_REG_R_REMOTE_TEMPL);
+ data->temp11[0] = i2c_smbus_read_byte_data(client,
+ LM90_REG_R_REMOTE_TEMPL);
newh = i2c_smbus_read_byte_data(client,
LM90_REG_R_REMOTE_TEMPH);
if (newh != oldh) {
- data->temp_input2 = i2c_smbus_read_byte_data(client,
- LM90_REG_R_REMOTE_TEMPL);
+ data->temp11[0] = i2c_smbus_read_byte_data(client,
+ LM90_REG_R_REMOTE_TEMPL);
#ifdef DEBUG
oldh = i2c_smbus_read_byte_data(client,
LM90_REG_R_REMOTE_TEMPH);
@@ -586,16 +615,16 @@ static struct lm90_data *lm90_update_device(struct device *dev)
"wrong.\n");
#endif
}
- data->temp_input2 |= (newh << 8);
+ data->temp11[0] |= (newh << 8);
- data->temp_high2 = (i2c_smbus_read_byte_data(client,
+ data->temp11[1] = (i2c_smbus_read_byte_data(client,
+ LM90_REG_R_REMOTE_LOWH) << 8) +
+ i2c_smbus_read_byte_data(client,
+ LM90_REG_R_REMOTE_LOWL);
+ data->temp11[2] = (i2c_smbus_read_byte_data(client,
LM90_REG_R_REMOTE_HIGHH) << 8) +
i2c_smbus_read_byte_data(client,
LM90_REG_R_REMOTE_HIGHL);
- data->temp_low2 = (i2c_smbus_read_byte_data(client,
- LM90_REG_R_REMOTE_LOWH) << 8) +
- i2c_smbus_read_byte_data(client,
- LM90_REG_R_REMOTE_LOWL);
data->alarms = i2c_smbus_read_byte_data(client,
LM90_REG_R_STATUS);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-25 10:17:21 +0100